The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2024
Filed:
Nov. 22, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Yong Ju Lee, Daejeon, KR;
Rae Hwan Jo, Daejeon, KR;
Su Min Lee, Daejeon, KR;
Dong Hyuk Kim, Daejeon, KR;
Se Mi Park, Daejeon, KR;
Assignee:
LG ENERGY SOLUTION, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/485 (2010.01); C01B 33/22 (2006.01); C01B 33/32 (2006.01); H01M 4/02 (2006.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/485 (2013.01); C01B 33/22 (2013.01); C01B 33/32 (2013.01); H01M 4/366 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); C01P 2002/02 (2013.01); C01P 2004/80 (2013.01); C01P 2006/40 (2013.01); H01M 2004/027 (2013.01);
Abstract
A negative electrode active material for a lithium secondary battery, which includes a silicon-based particle represented by M-SiO, wherein M is Li, Mg, Ca, Al, or Ti, and 0≤x<2, wherein the M-SiOincludes an amorphous phase at 20 wt % to 70 wt % based upon a total weight of the M-SiO, thereby exhibiting excellent initial efficiency and lifespan characteristics, and a preparation method thereof.